div{
    border: 1px black solid;
    height: 550px;
    width: 400px;
    margin: 20px auto;
    padding-top: 50px;
    padding-left: 100px;
    background-color: lightblue;
}

input[name="box"]{
    width: 100px;
    height: 40px;
    border: none;
    background-color: skyblue;
    box-shadow: 2px 2px rgba(0, 0, 0, .1);
}